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Last week I had a discussion on the key characteristics of Data Flow Diagrams. This week I will discuss the advantages of DFD’s and also the drawbacks of DFD’s to try and get a full understanding of the system.

1. Advantages of data flow diagram:

It aids in describing the boundaries of the system.

It is beneficial for communicating existing system knowledge to the users.

A straightforward graphical technique which is easy to recognise.

DFDs can provide a detailed representation of system components.

It is used as the part of system documentation file.

DFDs are easier to understand by technical and nontechnical audiences

It supports the logic behind the data flow within the system.

2. Disadvantages of data flow diagram:

It make the programmers little confusing concerning the system.

The biggest drawback of the DFD is that it simply takes a long time to create, so long that the analyst may not receive support from management to complete it.